diff --git a/Design.md b/Design.md
index 8ea4367..8155553 100644
--- a/Design.md
+++ b/Design.md
@@ -71,7 +71,7 @@ An example is Samhein which is typically November 1.
 #### `loc`
 
 | Column Name | Type | Constraints? | Calculated? |
-| -- | - | - | --- |
+| -- | :-: | :-: | :---: |
 | loc_id | INT | PK,UNIQUE |  |
 | zip_code | STRING | UNIQUE |  |
 | lat | STRING |  |  |
@@ -80,13 +80,13 @@ An example is Samhein which is typically November 1.
 #### `loc_weather`
 
 | Column Name | Type | Constraints? | Calculated? |
-| -- | - | - | --- |
+| -- | :-: | :-: | :---: |
 | loc_weather_id | INT | PK,UNIQUE |  |
 | loc_id | INT | FK |  |
 | weather_date | DATE |  |  |
-| isCurrent |  |  | `if weather_date >= sysdate then 'Y' else 'N' fi` |
-| isOld |  |      | `if weather_date < sysdate then 'Y' else 'N' fi` |
-| isExpired |  |  | `if weather_date < sysdate-7 then 'Y' else 'N' fi` |
+| isCurrent | - |  | `if weather_date >= sysdate   then 'Y' else 'N' fi` |
+| isOld | - |      | `if weather_date <  sysdate   then 'Y' else 'N' fi` |
+| isExpired | - |  | `if weather_date <  sysdate-7 then 'Y' else 'N' fi` |
 
 | Extra Constraints |
 | --- |