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October 20th, 2013 is the cutover for BRST. So if you are in Brazil (in a BRST timezone) you will transition from BRT (UTC -3) to BRST (UTC-2).

From TimeAndDate.com:

Current time in São Paulo: Wednesday, May 22, 2013 at 3:19:14 PM BRT

São Paulo will stay on BRT until Sunday, October 20, 2013 going to BRST

The transition happens at Midnight and Midnight to 1am is skipped. To get a time on that date you can try:

date = new Date("10/20/2013 01:00:00");

And you should get 10/20/2013 01:00:00 with BRST as the timezone designation.

For someone in a US timezone that participates in DST who wants to see this issue; Use the US daylight savings time transition point of March 10th 2013, where 2am is skipped ahead to 3am:

var d = new Date("03/10/2013 02:59:59")
alert(d);   // Returns 1:59:59 AM in the Standard Time Zone

var d = new Date("03/10/2013 03:00:00")
alert(d);   // Returns 3:00:00 AM in the Daylight Time Zone

October 20th, 2013 is the cutover for BRST. So if you are in Brazil (in a BRST timezone) you will transition from BRT (UTC -3) to BRST (UTC-2).

From TimeAndDate.com:

Current time in São Paulo: Wednesday, May 22, 2013 at 3:19:14 PM BRT

São Paulo will stay on BRT until Sunday, October 20, 2013 going to BRST

The transition happens at Midnight and Midnight to 1am is skipped. To guarantee a time on that date you can try:

date = new Date("10/20/2013 01:00:00");

And you should get 10/20/2013 01:00:00 with BRST as the timezone designation.

For someone in a US timezone that participates in DST who wants to see this issue; Use the US daylight savings time transition point of March 10th 2013, where 2am is skipped ahead to 3am:

var d = new Date("03/10/2013 02:59:59")
alert(d);   // Returns 1:59:59 AM in the Standard Time Zone

var d = new Date("03/10/2013 03:00:00")
alert(d);   // Returns 3:00:00 AM in the Daylight Time Zone

October 20th is the cutover for BRST. So if you are in Brazil (which I am guessing because of BRT) you will transition from BRT (UTC -3) to BRST (UTC-2).

From TimeAndDate.com:

Current time in São Paulo: Wednesday, May 22, 2013 at 3:19:14 PM BRT

São Paulo will stay on BRT until Sunday, October 20, 2013 going to BRST

The transition happens at Midnight and Midnight to 1am is skipped, you can try:

date = new Date("10/20/2013 01:00:00");

And you should get 10/20/2013 01:00:00 with BRST as the timezone designation.

For someone in a US timezone that participates in DST who wants to see this issue; Use the US daylight savings time transition point of March 10th 2013, where 2am is skipped ahead to 3am:

var d = new Date("03/10/2013 02:59:59")
alert(d);   // Returns 1:59:59 AM in the Standard Time Zone

var d = new Date("03/10/2013 03:00:00")
alert(d);   // Returns 3:00:00 AM in the Daylight Time Zone

October 20th, 2013 is the cutover for BRST. So if you are in Brazil (in a BRST timezone) you will transition from BRT (UTC -3) to BRST (UTC-2).

From TimeAndDate.com:

Current time in São Paulo: Wednesday, May 22, 2013 at 3:19:14 PM BRT

São Paulo will stay on BRT until Sunday, October 20, 2013 going to BRST

The transition happens at Midnight and Midnight to 1am is skipped. To get a time on that date you can try:

date = new Date("10/20/2013 01:00:00");

And you should get 10/20/2013 01:00:00 with BRST as the timezone designation.

For someone in a US timezone that participates in DST who wants to see this issue; Use the US daylight savings time transition point of March 10th 2013, where 2am is skipped ahead to 3am:

var d = new Date("03/10/2013 02:59:59")
alert(d);   // Returns 1:59:59 AM in the Standard Time Zone

var d = new Date("03/10/2013 03:00:00")
alert(d);   // Returns 3:00:00 AM in the Daylight Time Zone

October 20th is the cutover for BRST. So if you are in Brazil (which I am guessing because of BRT) you will transition from BRT (UTC -3) to BRST (UTC-2).

From TimeAndDate.com:

Current time in São Paulo: Wednesday, May 22, 2013 at 3:19:14 PM BRT

São Paulo will stay on BRT until Sunday, October 20, 2013 going to BRST

The transition happens at Midnight and Midnight to 1am is skipped, you can try:

date = new Date("10/20/2013 01:00:00");

And you should get a time with BRST as the timezone designation.

For someone in a US timezone who wants to see this issue they can use the US daylight savings time transition point of March 10th 2013:

var d = new Date("03/10/2013 02:59:59")
alert(d);   // Returns 1:59:59 AM in the Standard Time Zone

var d = new Date("03/10/2013 03:00:00")
alert(d);   // Returns 3:00:00 AM in the Daylight Time Zone

October 20th is the cutover for BRST. So if you are in Brazil (which I am guessing because of BRT) you will transition from BRT (UTC -3) to BRST (UTC-2).

From TimeAndDate.com:

Current time in São Paulo: Wednesday, May 22, 2013 at 3:19:14 PM BRT

São Paulo will stay on BRT until Sunday, October 20, 2013 going to BRST

The transition happens at Midnight and Midnight to 1am is skipped, you can try:

date = new Date("10/20/2013 01:00:00");

And you should get 10/20/2013 01:00:00 with BRST as the timezone designation.

For someone in a US timezone that participates in DST who wants to see this issue; Use the US daylight savings time transition point of March 10th 2013, where 2am is skipped ahead to 3am:

var d = new Date("03/10/2013 02:59:59")
alert(d);   // Returns 1:59:59 AM in the Standard Time Zone

var d = new Date("03/10/2013 03:00:00")
alert(d);   // Returns 3:00:00 AM in the Daylight Time Zone