The highest toll was in Douma, the largest town in the Eastern Ghouta region, where raids killed 16 civilians including at least one child and wounded 22, it said.
An AFP correspondent at the town hospital said he saw many wounded people, their faces bloodied. All the facility's beds were occupied by men, women and children.
A child burst into tears when he found his father in the hospital, the correspondent said.
Five more civilians were killed in the town of Sabqa and one in the town of Harasta, both also in Eastern Ghouta, the Observatory said.
Last month, the armed opposition launched a surprise assault against regime forces from Jobar, but was repelled after a week of fighting.
Eastern Ghouta has been under a devastating government siege since 2012, and is targeted regularly by air strikes and artillery.
It is the last remaining opposition stronghold near Damascus, where a string of local "reconciliation deals" have seen villages and towns brought back under the control of President Bashar al-Assad's government.
The regime is fighting to push rebels out of five neighbourhoods in Damascus.
They are also present in Barzeh in the north and Tadamun in the south, but the neighbourhoods are covered by a truce with the regime.
More than 320,000 people have been killed and millions displaced since Syria's war started in 2011 with the brutal repression of anti-government protests.
Disclaimer: No Business Standard Journalist was involved in creation of this content
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
