Massachusetts, USA
EST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Costa Rica
CST
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Compare Boston time with San Juan time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

EST (Eastern Standard Time) is 1 hour ahead of CST (Central Standard Time)
7:00 am07:00 in Boston, MA, USA is 6:00 am06:00 in San Juan, Costa Rica

Boston to San Juan call time
Best time for a conference call or a meeting is between 10am-5pm in Boston which corresponds to 9am-4pm in San Juan

7:00 am07:00 EST (Eastern Standard Time) (Boston, MA, USA). Offset UTC -5:00 hours
6:00 am06:00 CST (Central Standard Time) (San Juan, Costa Rica). Offset UTC -6:00 hours

7:00 am07:00 Boston, MA, USA / 6:00 am06:00 San Juan, Costa Rica

Boston, MA, USASan Juan, Costa Rica
12am (midnight)11pm
1am12am (midnight)
2am1am
3am2am
4am3am
5am4am
6am5am
7am6am
8am7am
9am8am
10am9am
11am10am
12pm (noon)11am
1pm12pm (noon)
2pm1pm
3pm2pm
4pm3pm
5pm4pm
6pm5pm
7pm6pm
8pm7pm
9pm8pm
10pm9pm
11pm10pm
00:0023:00
01:0000:00
02:0001:00
03:0002:00
04:0003:00
05:0004:00
06:0005:00
07:0006:00
08:0007:00
09:0008:00
10:0009:00
11:0010:00
12:0011:00
13:0012:00
14:0013:00
15:0014:00
16:0015:00
17:0016:00
18:0017:00
19:0018:00
20:0019:00
21:0020:00
22:0021:00
23:0022:00

Boston Information

Time Zone

Abbreviation / Name
EDT - Eastern Daylight Time
EST - Eastern Standard Time
UTC / GMT Offset
-4:00 hours during Eastern Daylight Time, currently in use.
-5:00 hours during Eastern Standard Time.
Daylight Saving Time Change
+1:00 hour - DST is in use
Daylight Saving Time Starts
Daylight saving time clock moves forward for one hour from 2am to 3amSunday, March 8, 2026 at 2:00 am local time. DST starts annually on the 2nd Sunday of March. Clocks are turned forward 1 hour to Sunday, March 8, 2026 at 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Daylight saving time clock moves back for one hour from 2am to 1amSunday, November 1, 2026 at 2:00 am local time. DST ends annually on the 1st Sunday of November. Clocks are turned backward 1 hour to Sunday, November 1, 2026 at 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.

Boston Facts

Country
USA
State
Massachusetts
Alternative Names
BOS, Baston, Bostan, Boston, Bostona, Bostonas, Bostone, Bostonia, Bostono, Bostons, Bostun, Bostún, Mushauwomuk, Old Boston, Po-su-tun, Pokekona, Pô-sṳ-tun, Shawmut, Shawmutt, Shawnnut, Totant, Tramount, Tremont, Trimountain, Trimountaine, Vostoni, Wahstoronon:ke, Wahstoronòn:ke, Wastok, bastan, bastana, bausatana, beasrraൺ, bo shi dun, boseuteon, bostan, bostana, bostʼoni, bosuton, bwstn, bwstwn, bxstan, pastan, Βοστωνη, Βοστώνη, Бостан, Бостон, Бостън, Բոստոն, באסטאן, בוסטון, بوستون, بوسطن, بوسٹن, بۆستن, ܒܘܣܛܘܢ, बस्तन, बास्टन्, बॉस्टन, बोस्टन, বস্টন, ਬੌਸਟਨ, பாஸ்டன், బోస్టన్, ಬಾಸ್ಟನ್, ബോസ്റ്റൺ, บอสตัน, བོ་སེ་ཊོན།, ဘော့စတွန်မြို့, ბოსტონი, ቦስቶን, ボストン, 波士頓, 波士顿, 보스턴
Population
667,137
Currency
Dollar (USD)
Geographic Coordinates
42° 21' N Latitude / 71° 03' W Longitude
International Dialing Code
+1

San Juan Information

Time Zone

Abbreviation / Name
CST - Central Standard Time
UTC / GMT Offset
-6:00 hours during Central Standard Time, currently in use.

San Juan Facts

Country
Costa Rica
Alternative Names
San Juan
Population
26,047
Currency
Colon (CRC)
Geographic Coordinates
9° 57' N Latitude / 84° 04' W Longitude
International Dialing Code
+506