Massachusetts, USA
EST
Iran
IST

Time Difference

EST (Eastern Standard Time) is 8 hours and 30 minutes behind IST (Iran Standard Time)
12:00 pm12:00 in Waltham, MA, USA is 8:30 pm20:30 in Tehran, Iran

Waltham to Tehran call time
Best time for a conference call or a meeting is between 8am-10am in Waltham which corresponds to 4:30pm-6:30pm in Tehran

12:00 pm12:00 EST (Eastern Standard Time) (Waltham, MA, USA). Offset UTC -5:00 hours
8:30 pm20:30 IST (Iran Standard Time) (Tehran, Iran). Offset UTC +3:30 hours

12:00 pm12:00 Waltham, MA, USA / 8:30 pm20:30 Tehran, Iran

Waltham, MA, USA Tehran, Iran
12am (midnight) 8:30 am
1am 9:30 am
2am 10:30 am
3am 11:30 am
4am 12:30 pm
5am 1:30 pm
6am 2:30 pm
7am 3:30 pm
8am 4:30 pm
9am 5:30 pm
10am 6:30 pm
11am 7:30 pm
12pm (noon) 8:30 pm
1pm 9:30 pm
2pm 10:30 pm
3pm 11:30 pm
4pm 12:30 am
5pm 1:30 am
6pm 2:30 am
7pm 3:30 am
8pm 4:30 am
9pm 5:30 am
10pm 6:30 am
11pm 7:30 am
0:00 8:30
1:00 9:30
2:00 10:30
3:00 11:30
4:00 12:30
5:00 13:30
6:00 14:30
7:00 15:30
8:00 16:30
9:00 17:30
10:00 18:30
11:00 19:30
12:00 20:30
13:00 21:30
14:00 22:30
15:00 23:30
16:00 0:30
17:00 1:30
18:00 2:30
19:00 3:30
20:00 4:30
21:00 5:30
22:00 6:30
23:00 7:30

Waltham Information

Time Zone

Abbreviation / Name
EST - Eastern Standard Time
EDT - Eastern Daylight Time
UTC / GMT Offset
-5:00 hours during Eastern Standard Time, currently in use.
-4:00 hours during Eastern Daylight Time.
Daylight Saving Time Change
+1:00 hour - DST is NOT in use
Daylight Saving Time Starts
Daylight saving time clock moves forward for one hour from 2am to 3am Sunday, March 10, 2024 at 2:00 am local time. DST starts annually the on second Sunday of March. Clocks are turned forward 1 hour to Sunday, March 10, 2024, 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 1am Sunday, November 3, 2024 at 2:00 am local time. DST ends annually the on first Sunday of November. Clocks are turned backward 1 hour to Sunday, November 3, 2024, 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.

Waltham Facts

Country
USA
State
Massachusetts
Alternative Names
Uoltem, Voltam, Voltgem, WLM, u~orusamu, waltham, waltham masachwst, wo er se mu, wwltm, Волтам, Волтгем, Уолтем, וולתם, والتهام، ماساچوست, والتھم، میساچوسٹس, والثام, ウォルサム, 沃尔瑟姆
Population
63,378
Currency
Dollar (USD)
Geographic Coordinates
42° 22' N Latitude / 71° 14' W Longitude
International Dialing Code
+1

Tehran Information

Time Zone

Abbreviation / Name
IST - Iran Standard Time
IRDT - Iran Daylight Time
UTC / GMT Offset
+3:30 hours during Iran Standard Time, currently in use.
+4:30 hours during Iran Daylight Time.
Daylight Saving Time Change
+1:00 hour - DST is NOT in use
Daylight Saving Time Starts
Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Also called Fall Back or switch to Winter Time.

Tehran Facts

Country
Iran
Alternative Names
THR, Taekhran, Tahran, Techerane, Teera, Teerao, Teerã, Teerão, Tegeran, Teheran, Teherana, Teheranas, Teherano, Teherán, Teherāna, Tehran, Tehrano, Tekheran, Téhéran, de hei lan, teharan, teharana, tehelan, teheran, tehran, teirani, thran, thrn, thrwn, tihiran, tihran, Τεχεράνη, Тæхран, Тегеран, Техеран, Теҳрон, Թեհրան, טהראן, טהרן, تهران, تهرون, تِهران, تِهِرَن, تہران, طهران, ܛܗܪܐܢ, तेहरान, তেহরান, தெஹ்ரான், เตหะราน, ཏེ་ཧི་རན​།, თეირანი, ቴህራን, テヘラン, 德黑兰, 테헤란
Population
7,153,309
Currency
Rial (IRR)
Geographic Coordinates
35° 41' N Latitude / 51° 25' E Longitude
International Dialing Code
+98